2011•Chinese Journal of Neurosurgical Disease ResearchRequires access
Application of abnormal muscle response monitoring during microvascular decompression for hemifacial spasm
Shiting Li
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Abstract
Objective To evaluate the value of abnormal muscle response (AMR) monitoring during microvascular decompression (MVD) for hemifacial spasm (HFS) and the correlation between the AMR changes and the clinical outcome.Methods A total of 305 HFS cases were performed with intraoperative AMR monitoring during MVD. The therapeutic effect was evaluated at 1 d, 1 month and 3 months postoperation. The correlation between AMR changes and prognosis was analyzed. Results Typical AMR was observed in all cases. Relief rate at 1 d, 1 month and 3 months postoperation was 89.8%, 93.8% and 94.8%, respectively. The therapeutic effect in AMR-complete-disappeared group and AMR-partial-disappeared group was significant better than that of AMR-non-disappeared group (P0.05).Conclusion Intraoperative AMR monitoring is helpful for the identification of offending vessels and prediction of outcomes, which may improve the therapeutic effect of MVD.